A piezoelectric micro electro-mechanical system switch (MEMS), an array of piezoelectric MEMS switches, and a method of fabricating the switch, which are capable of improving low voltage and switching characteristics while securing high signal isolation, are provided. The piezoelectric MEMS switch includes a semiconductor substrate including a groove, a support formed over the semiconductor substrate and the groove. An actuator including a piezoelectric layer is formed on the support. A switching member is formed on the support on one side of the actuator, wherein upward movement of the switching member changes by a deformation of the piezoelectric layer of the actuator. Radio frequency (RF) transfer lines are arranged at a predetermined distance on the switching member and are separated by a predetermined interval from each other. The actuator is formed to have at least two cantilevers each having one end such that the ends are connected to each other.